Startech 3' USB to RS232 DB9/DB25 Serial Adapter Cable - Walmart.com
USB CP2102 to TTL RS232 USB TTL to RS485 Mutual Convert 6 in 1 Convert Module good for arduino|Integrated Circuits| - AliExpress
PL2303 USB rs232 converter adpater serial module port Prolific pl2303 rs232 pcb board adapter|Computer Cables & Connectors| - AliExpress
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - Coolgear
USB-C to Serial Adapter, RS232
USB to TTL RS232 USB TTL to RS485 Mutual Convert 6 in 1 Convert Module CP2102 | eBay
Pololu - Parallax USB-to-Serial (RS-232) Adapter #28030
MOD-USB-RS232 - Open Source Hardware Board
USB to Serial Adapter w/ Detachable USB - Serial Cards & Adapters
USB-RS232-PCBA - Ftdi - UART Serial Converter PCB, USB to RS232
MM232R - Ftdi - USB Interface, Industrial, Home Projects
USB To RS232 Converter
Tripp Lite Keyspan High Speed USB to Serial Adapter 3ft USB Cable TAA - USA-19HS - -
USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
6pin FTDI FT232RL USB to Serial Adapter Module USB to TTL RS232 Replacement for Arduino Cable - Walmart.com
USB to RS232 TTL Serial Interface Cable
USB to Serial Adapter Cable
Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Chipset) – Plugable Technologies
